Centrifugal casting machine



July 14, 1931. w. H. MILLSPAUGH CENTRIFUGAL (IA STING MACHINE Filed June 18, 1929 6 CW .5 4 W; NM R W m m M W W m Patented July 14, 1931 UNITED STATES PATENT OFFICE WILLIAM H. MILLSPAUG-H, OF SANID'USKY, OHIO, ASSIGNOR TO THE PAPER & TEXTILE MACHINERY COMPANY, OF SAND'USKY, OHIO, A CORPORATION OF OHIO cEn'rnmUeAL CASTING MACHINE Application filed June 18,

This invention relatesto centrifugal casting machines and especially to a machine for casting metals.

7 Its object is to provide in a machine of f this character, a means for controlling the temperature of the mold. In Patent No.

1,235,994; issued August 7, 1917, is shown a' water-cooled machine for centrifugal castings, which is effective for certain work, but in the further development of the art it has been found that acontrol of the temperature becomes necessary for producing the results.

This is especially true when the same machine is used to make castings of different metals or of different sizes. So the purpose of this invention is to produce a simple and effective arrangement for controlling the cooling water which surrounds the mold.

Referring to the drawings, 90 Fig. 1 is a longitudinal section of a machine which is made according to and embodies the present invention;

Figs. 2, 3, 4 and 5 are transverse sections on lines 22, 3-3, 4.4 and 55respectively of Fig. 1;

Figs. 6, 7 and 8 are diagrammatic developments of certain of the parts shown in Figs. 1 and 4 illustrating different relative positions of adjustment.

Like characters of reference designate similar parts on the various figures of the drawings.

10 designates the rotor of a centrifugal casting machine which is understood to be suitably mounted to be driven at the desired rate of rotation. 11 is a mold within the rotor and held concentric therewith by means of spaced lugs 12 projecting from the rotor near one of its ends and by means of a face-plate 13 bolted onto the rotor through a flange 14 on the other end of the mold. This leaves an annular space 15 between the inside of the rotor and the outside of the mold, closed at one end by the flange 14, and partly closed at the other end by a plate 16 secured to the end of the rotor. 17 is a dumper or filling trough extending through the mold and the end plates.

Water or other cooling liquid from a supply pipe 20, is introduced into the annular 1929. semi No. 371,739.

space 15 by means of an arcuate spout 21. The water is thrown outwardly by the rotation of the machine. It is of importance that the space 15 be entirely filled with water throughout the casting operation and that its rate of flow through the machine be controlled. The first of these objects is accomplished by opening the valve 22 in the supply pipe enough to introduce a sufli cient amount of water to keep the space tilled nearly to the opening in the plate 16. The other object is effected by providing at the other end of the machine, water outlets which are accurately proportioned to give the desired rate of fiow and to thereby keep the mold at the desired temperature. I prefer to make these water outlets adjustable'and have shown one way of doing this which will be' described.

A plurality of spaced orifices 30 are provided in the rotor, through which the water escapes. 31 is a rotatable sleeve provided with orifices 32 which may be moved into or out of registration with the orifices 30. The sleeve 31 has a flange 33 having slots 34 through which are bolts 35 which secure it to the face-plate 13. 36 is a pointer projecting from the flange 33 over the top of the faceplate which is graduated as indicated at 37 (Fig. 5), to show the position of sleeve 31 relative to the rotor 10.

The orifices 30 and 32 are arranged in several series, one of which is shown in Figs. 6. 7 and 8, so spaced that in one position of the sleeve 31,'-that shown in Fig. 6,-all of the orifices are in registration; in another position,-that shown in Fig. 7,one half of the orifices are in registration, and in the .third postion, shown in Fig. 8, one fourth of them are in registration. Thus the outlets for the water may be adjusted and the flow of the cooling liquid controlled. Of course in positions intermediate. those shown in Figsf6, 7 and 8, the outlet discharge may be regulated to a greater nicety.

, Under the discharge end of the rotor is a trough 40 with an outlet 41. A hollow frame 42 extends upwardly from the trough over the rotor in close proximity to the sleeve 31.

As shown in Fig. 1, the wall of this frame is curved as at 43 and 44, to divert the water which is thrown outwardly through the outlet orifices, so that it will run down into the trough 40 from which it is discharged.

By the arrangement herein shown and described the space between the rotor and the mold may be kept completely filled with cooling liquid, and the mold may be kept at the required temperature by controlling the rate of flow of the cooling liquid. Various structural modifications may be made without departing from the spirit and scope of this invention and no limitations are intended other than those imposed by the appended claims.

What I claim is:

1. A casting apparatus comprising a rotor, a mold secured thereto and spaced therefrom to provide a cooling chamber surrounding the mold, an inwardly extending flange at one end of the rotor beyond the mold forming an inlet channel, and an inlet spout in said channel, said rotor being constructed with a plurality of angularly spaced orifices near the other end of the chamber with their combined area restricted to control the rate of circulation of the cooling liquid through said chamber.

2. A casting apparatus comprising a rotor, a mold secured thereto and'spaced therefrom to provide a cooling chamber surrounding the mold, an inwardly extending flange at one end of the rotor beyond the mold forming an inlet channel, an inlet spout in said channel, and an adjustable supply conduit connected with said spout, said rotor being constructed with a plurality of angularly spaced orifices near the other end of the chamber with their combined area restricted to control the rate of circulation of the cooling liquid through said chamber, and means for adjusting the rate of discharge of the cooling liquid through said orifices.

3. A casting apparatus comprising a rotor,

a mold secured thereto and spaced therefrom to provide a cooling chamber surrounding themold, an inwarc%y extending flange at one end of the rotor eyond the mold forming an inlet channel, an inlet spout in said channel, an adjustable supply conduit copnected with said spout, said rotor being con structed with a plurality of angularly spaced orifices near the other endof the chamber with their combined area restricted to control the rate of circulation of the cooling liquid through said chamber, and a sleeve surrounding the rotor over said orifices, said sleeve being constructed with orifices difierently spaced from those in the rotor and-being rotatable on the rotor to change the relation of its orifices to those on the rotor to thereby control the rate of circulation of the cooling liquid through said chamber.

4. A casting apparatus comprising a rotor, a mold secured thereto and spaced there- 1 from to provide a cooling chamber surrounding the mold, means for introducing a cooling liquid at one end of said chamber, and a restricted outlet at the other end of the chamber arranged to control the rate of circulation of the cooling liquidpthrough said chamber.

5. A casting apparatus comprising a rotor, a mold secured thereto and spaced therefrom to provide a cooling chamber surrounding the mold, means for introducing a cooling liquid at one end of said chamber, a restricted outlet at the other end of the chamber arranged to control the rate of circulation of the cooling liquid through said chamber, and means for adjusting the restriction of said outlet.

6. A casting apparatus comprising a rotor, a mold secured thereto and spaced therefrom to provide a cooling chamber surrounding the mold, means for introducing a cooling liquid at one end of said chamber, and a plurality of angularly spaced outlets in the rotor at the other end of the chamber having their combined area predetermined to control the rate of circulation of the cooling angularly spaced orifices near the other end A of the chamber with their combined area restricted to control the rate of circulation of the cooling liquid through said chamber.

8. A casting apparatus comprising a rotor, a mold secured thereto and spaced therefrom to provide a cooling chamber surrounding the mold, means for introducing a cooling liquid at one end of said chamber, said rotor being constructed with a plurality of angularly spaced orifices near the other end of lthe chamber with their combined area restricted to control the rate of circulation of the cooling liquid through said chamber.

' 9. A casting apparatus comprising a rotor, a mold secured thereto and spaced therefrom to provide a cooling chamber surrounding the mold, means for introducing a cooling liquid at one end of said chamber, said rotor being constructed with a plurality of angularly spaced orifices near the other end of the chamber, and a sleeve surrounding the rotor over said orifices, said sleeve being constructed with orifices differently spaced from those in the rotor and being rotatable on the rotor to change the relation of its orifices to those on the rotor to thereby control the rate of circulation of the cooling liquid through said chamber.

10. A casting apparatus comprisinga rotor, a mold secured thereto and spaced therefrom to provide a cooling chamber surrounding the mold, an inwardly extending flange at one end of the rotor beyond the mold forming an annular inlet channel, an arcuate spout in said channel, and a restricted outlet at the other end of the chamber arranged to control the rate of circulation of the cooling liquid through said chamber.

11. A casting apparatus comprising a rotor, a mold secured thereto and spaced therefrom to provide a cooling chamber surrounding the mold, an inwardly extending flange at one end of the rotor beyond the mold forming an inlet channel, and a plurality of angular-1y spaced outlets in the rotor at the other end of the chamber having their combined area predetermined to control the rate of circulation of the cooling liquid through said chamber.

12. A casting, apparatus comprising a rotor, a mold secured thereto and spaced therefrom to provide a cooling chamber surrounding the mold, an inwardly extending flange at one end of the rotor beyond the mold forming an annular inlet channel, an arcuate spout in said channel, an adjustable supply conduit connected with said spout, and a restricted outlet at the otherend of the chamber arranged to control the rate of circulation of the cooling liquid through said chamber.

WILLIAM H. MILLSPAUGH. 

